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Finding the Fourth Proportional to 18,578.86, 25,637.13 and 11,023.89

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Solution

The fourth proportional to 18,578.86, 25,637.13 and 11,023.89 is: 15,211.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,578.86 : 25,637.13 = 11,023.89 : x
  2. Step 2: Convert to fraction form
    18,578.86/25,637.13 = 11,023.89/x
  3. Step 3: Cross multiply
    18,578.86x = 25,637.13 × 11,023.89
  4. Step 4: Simplify right side
    18,578.86x = 282,620,901.04
  5. Step 5: Solve for x
    x = 282,620,901.04/18,578.86
  6. Step 6: Final answer
    x = 15,211.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.